Problems with receiving mail when your mail account is set up for IMAP. This component should be chosen if you've verified that the receiving problem is specific to IMAP protocol. A
few examples: 1. Interoperability problems with IMAP servers (i.e. folders, naming conventions) would fall into this
component. 2. Using the IMAP delete model

So I tried to reproduce it as you asked, and looks like a discovered a new bug completely. Tried moving 6 msgs from my Local Folder to an IMAP folder. Switched to offline mode before it could copy. Then I quit thunderbird, and restarted it. Upon restarting, Offline mode was already disabled. 6 msgs were copied to the IMAP server, but it copied 6 copies of a single msg! The other 5 msgs were lost completely (its okay, just using test msgs). So there is another data loss bug for you. But I think my original bug was different, possibly being triggered specifically by the IMAP server rejecting a connection because of connection rate limiting. Anyone have any idea how to duplicate that?

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